Page 283 - New Medley 5 Semester 1

and the auditory canal. The sound waves, collected by the pinna, travel through

the auditory canal and strike the eardrum. The eardrum is connected to the
middle ear which has three tiny bones. These bones carry the sound waves to

the cochlea of the internal ear. From the cochlea, the sound waves are carried
to the brain by the auditory nerve.

Care of the Ears

We can keep our ears healthy by giving them proper care.

 Never hear loud music or loud noises.

 Never use a matchstick/hairpin or any other sharp object to clean the ears.

 A doctor must be consulted in case of an earache.

Nose – The Organ of Smell

Nose is the organ of smell. It happens many times that we smell a particular thing

even without knowing about its presence. It is because of presence of the fine
particles or molecules of this thing in the surrounding

air. When we breathe in air, these particles also enter
our nose. The upper part of nose has the olfactory

Olfactory nerve nerve that carries the message of smell to the brain.
endings
Nasal chamber Dust particles also enter our nose along with the air
we breathe in. The inner lining of the nose has small

Structure of the nose hair which trap dust particles and filter the air.

Care of the Nose
 Keep your nose clean. The hair in your nose filter dirt, so always breathe

through the nose.

 Do not pick the nose.

 Do not use a dirty hanky to blow your nose as it Bitter
may cause infection.

Sour Sour
Tongue – The Organ of Taste

The tongue is the organ of taste. It has thousands of Salt Salt
tiny taste buds that can taste sweet, bitter, salty and Sweet

sour. These buds have nerve endings which carry the Location of different types
of taste buds on the tongue

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